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restore: New optimized multithreaded implementation

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Signed-off-by: Igor Fedorenko <igor@ifedorenko.com>
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Igor Fedorenko
2018-04-08 08:02:30 -04:00
committed by Alexander Neumann
parent 1213d8fef4
commit 1869930d95
14 changed files with 1854 additions and 24 deletions
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15
changelog/unreleased/issue-1605 Normal file
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Enhancement: Concurrent restore
This change significantly improves restore performance, especially
when using high-latency remote repositories like B2.
Implementation uses threads to download and process miltiple remote
files concurrently. To further reduce restore time, each remote
file is downloaded using single repository request.
Old restore implementation can be enabled with `--signethreaded` flag.
Use `--verify` restore flag to read restored files and verify their
content checksum.
https://github.com/restic/restic/issues/1605
https://github.com/restic/restic/pull/1719